USPTO Art Unit 3645 Prosecution Statistics

Art Unit Information

Art Unit: 3645
Group: 3640
Tech Center: 3600
Total Cases: 13,248
Last Active: September 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19320248LASER RANGING APPARATUS, RANGEFINDER, AND RANGING METHODSeptember 2025November 2025Allow200YesNo
19318179ADAPTIVE MULTI-BAND FERRITE HELIX ARRAY WITH HYBRID CONDUCTOR SYSTEM AND ELECTRONIC BEAM STEERING AND METHOD FOR USESeptember 2025October 2025Allow100NoNo
19291067METHOD AND APPARATUS FOR POSITIONINGAugust 2025October 2025Allow200NoNo
19239611RADAR SYSTEM FOR IDENTIFYING MATERIAL COMPOSITION OF AERIAL OBJECTSJune 2025August 2025Allow200NoNo
19230613APPARATUS AND METHOD FOR PSEUDO THERMAL LIGHT SOURCE GHOST IMAGING AND RANGE SENSING USING NARROW-BAND SPONTANEOUS EMISSIONJune 2025October 2025Allow410NoNo
19229828Method and System for Refractive Beam-SteeringJune 2025November 2025Allow610NoNo
19219145DRONE SWARM-BASED SEISMIC SURVEYING FOR OIL EXPLORATION AND LANDMINE DETECTIONMay 2025October 2025Allow510NoNo
19208456METHODS AND SYSTEMS FOR SEISMIC MONITORINGMay 2025August 2025Allow300NoNo
19199512EXTRAPOLATION OF SEISMIC LAND STREAMER DATA USING INTERFEROMETRYMay 2025August 2025Allow410NoNo
19182525METHOD FOR TARGET DETECTION BASED ON CORRELATION ANALYSIS OF SPATIAL PHASE IN AN ACOUSTIC VORTEXApril 2025November 2025Allow710YesNo
19181277METHOD FOR DETERMINING ERROR COMPONENT OF PHOTOELECTRIC THEODOLITE AND METHOD FOR COMPENSATING ERROR COMPONENT OF PHOTOELECTRIC THEODOLITEApril 2025June 2025Allow200NoNo
19169942METHOD AND APPARATUS FOR TARGET SENSINGApril 2025July 2025Allow400NoNo
19096842SOFTWARE-DEFINED GAN-BASED UTILITY LOCATOR TRANSMITTERApril 2025May 2025Allow200NoNo
19096263GEO-LOCATING OF WIRELESS DEVICES USING SUM OF ROUND TRIP TIME AND ANGLE OF ARRIVAL SQUARED RESIDUALSMarch 2025May 2025Allow200NoNo
19095116HYBRID SOLID-STATE LIDAR WITH INCREASED SIGNAL DYNAMIC RANGE AND CONTROL METHODMarch 2025December 2025Allow910NoNo
19088711TRACKING SYSTEM AND TRACKING DEVICEMarch 2025June 2025Allow300NoNo
19086197LIDAR 3D TARGET DETECTION METHOD BASED ON REGION PILLAR FEATURE FUSION AND SYSTEM THEREOFMarch 2025October 2025Allow710NoNo
19059957DUAL-BAND ANTENNA ARRAY WITH STACKED ROTMAN LENS FEED FOR BEAMFORMINGFebruary 2025May 2025Allow300NoNo
19059517THREE-DIMENSIONAL PERCEPTION OF OBJECTS AND SURFACES IN UNDERWATER ENVIRONMENTSFebruary 2025February 2026Abandon1210NoNo
19058398IMAGE FUSION METHOD, HYPERSPECTRAL LIDAR SENSOR, AND HYPERSPECTRAL LIDAR SYSTEMFebruary 2025September 2025Allow710NoNo
19056225ULTRAPRECISION FREQUENCY-DOMAIN LIGHT DETECTION AND RANGING (LiDAR) SYSTEM FOR REMOTE MICRO-MOVEMENT SENSINGFebruary 2025July 2025Allow501NoNo
19052724SYSTEM FOR DETECTING GROUND SUBSIDENCE USING LIDAR TECHNOLOGYFebruary 2025August 2025Allow610NoNo
19102866FRACTURE CHARACTERIZATION WHILE DRILLINGFebruary 2025June 2025Allow400NoNo
19048248ACOUSTIC TRANSDUCER FOR TOWED SEISMIC PINGERFebruary 2025April 2025Allow200NoNo
19032920SYSTEM AND TECHNIQUES FOR DISCOVERY AND TRACKING OF OBJECTS IN SPACEJanuary 2025January 2026Allow1220NoNo
19023353ADAPTIVE FILTERING ALGORITHM FOR UNDERWATER ACOUSTIC CHANNEL ESTIMATIONJanuary 2025March 2026Abandon1420YesNo
18993152LIGHT GRID WITH DISTANCE MEASUREMENTJanuary 2025August 2025Allow710YesNo
19007502METHOD FOR RETRIEVING TROPOSPHERIC WET DELAY AND ATMOSPHERIC WATER VAPOR CONTENT OVER POLAR SEA ICE WITH TECHDEMOSAT-1 SATELLITE GRAZING ANGLE SPACEBORNE GLOBAL NAVIGATION SATELLITE SYSTEM REFLECTOMETRYJanuary 2025June 2025Allow610NoNo
18988779HIGH-PRECISION BEIDOU SATELLITE POSITIONING METHOD AND SYSTEM FOR COMPLEX URBAN ENVIRONMENTDecember 2024May 2025Allow510NoNo
18980397LASER SCANNING DEVICE OF UAV-BORNE LIDAR FOR WATER DEPTH MEASUREMENT, LIDAR, AND UAVDecember 2024October 2025Allow1000NoNo
18976245LIDAR RANGE AND SPEED MEASUREMENT METHOD AND LIDARDecember 2024February 2025Allow3300NoNo
18872478METHOD FOR GLOBAL PARKING STATUS DETECTION BASED ON 4D MILLIMETER WAVE IMAGING RADARDecember 2024October 2025Allow1110YesNo
18939876COAL ROCK INTERFACE DIRECTIONAL DETECTION DEVICE AND METHOD BASED ON ELASTIC WAVESNovember 2024March 2025Allow410NoNo
18933680LIDAR Sensor System Including Particular Optic DesignOctober 2024June 2025Allow710YesNo
18914028LIDAR AND MOBILE DEVICEOctober 2024March 2025Allow510NoNo
18905629PHOTONIC CHIP MODULE, LIDAR AND MOVABLE DEVICEOctober 2024December 2024Allow200NoNo
18886272DEVICE FOR WIRELESS HUMAN DETECTION BASED ON MICROWAVES, INFLATABLE MODEL, AND METHOD FOR HUMAN DETECTIONSeptember 2024March 2025Allow610NoNo
18884949METHODS AND APPARATUS FOR ARRAY BASED LIDAR SYSTEMS WITH REDUCED INTERFERENCESeptember 2024January 2025Allow510NoNo
18827854VECTORIAL ROTATION MEASUREMENT METHOD AND DEVICE BASED ON MULTI-CORE FIBERSeptember 2024November 2024Allow200NoNo
18827054Lidar Sensor System with Improved Optical Isolation FeaturesSeptember 2024March 2025Allow710YesNo
18814757WIRELESS SEISMIC SURVEY SYSTEMAugust 2024December 2024Allow410NoNo
18814777METHOD FOR SURVEYING WITH A WIRELESS SEISMIC NETWORKAugust 2024November 2024Allow210NoNo
18814737SYSTEM AND PROGRAM INSTRUCTIONS FOR SEISMIC SURVEYAugust 2024November 2024Allow210NoNo
18811380Lidar System with Individualized Semiconductor Optical Amplifier DiesAugust 2024January 2026Allow1730YesNo
18809262METHOD AND SYSTEM FOR VEHICULAR LIDAR AND COMMUNICATION UTILIZING A VEHICLE HEAD LIGHT AND/OR TAILLIGHT AND COMMUNICATING WITH VEHICLE SUBSYSTEMSAugust 2024October 2024Allow200YesNo
18808134LIDAR-CAMERA ONLINE CALIBRATION METHOD AND SYSTEM BASED ON REFLECTANCE MAPAugust 2024March 2025Allow720NoNo
18805245Exclusive Delivery of Content Within Geographic AreasAugust 2024May 2025Allow920NoNo
18805373METHOD AND SYSTEM FOR ACOUSTIC INDOOR POSITIONING BASED ON CDMAAugust 2024February 2025Allow610NoNo
18801597LIDAR DEVICE AND RANGING ADJUSTMENT METHODAugust 2024March 2025Allow710NoNo
18783026METHODS AND APPARATUS FOR ARRAY BASED LIDAR SYSTEMS WITH REDUCED INTERFERENCEJuly 2024January 2025Allow610NoNo
18779023METHOD AND SYSTEM FOR VEHICULAR LIDAR AND COMMUNICATION UTILIZING A VEHICLE HEAD LIGHT AND/OR TAILLIGHT AND LOAD BALANCING BETWEEN LIGHT OR OPTICAL COMMUNICATIONS AND RADIOFREQUENCY COMMUNICATIONSJuly 2024October 2024Allow200NoNo
29953307Solar Dragon StatueJuly 2024December 2024Allow510YesNo
18778879IDENTIFICATION METHOD OF SEABED WEAK ECHOES BY AIRBORNE LIDAR BATHYMETRY AND SYSTEM THEREOFJuly 2024January 2025Allow610NoNo
18775164DETERMINING METHOD AND APPARATUS FOR OBSTACLES AROUND THE PARKING PATH AND SURROUNDING USING ULTRASONIC WAVESJuly 2024January 2026Allow1800NoNo
18771899FREQUENCY PAIRING FOR DEVICE SYNCHRONIZATIONJuly 2024February 2025Allow700NoNo
18766160TRUE PARTICLE VELOCITY WAVEFIELD PROCESSING IN FIBER OPTICS - PARTICLE MOTION SENSOR HYBRID ARRAYJuly 2024March 2026Allow2000NoNo
18765295Microwave Motion Detection System and Lighting ApplicationsJuly 2024December 2024Allow510YesNo
18760695METHOD FOR AMPLIFYING AN OPTICAL SEED BEAMJuly 2024June 2025Allow1200NoNo
18759024OPTICAL TRANSCEIVING MODULE AND LASER RADARJune 2024December 2024Allow510NoNo
18756375SYSTEM, DEVICE AND METHOD FOR MOBILE DEVICE ENVIRONMENT SENSING AND USER FEEDBACKJune 2024May 2025Allow1110NoNo
18753233System and Method for Bond Log AnalysisJune 2024September 2025Allow1430NoNo
18723888INTERNAL SOLITARY WAVE (ISW) EARLY WARNING METHOD FOR OFFSHORE PLATFORM BASED ON BAROCLINIC MODEJune 2024October 2024Allow300NoNo
18752502TOTAL STATION WITH GNSS DEVICEJune 2024June 2025Allow1210NoNo
18721475ROBUST VIRTUAL SENSORJune 2024December 2025Allow1800NoNo
18745296VISUAL MAPPING METHOD, AND COMPUTER PROGRAM RECORDED ON RECORDING MEDIUM FOR EXECUTING METHOD THEREFORJune 2024March 2026Allow2140YesNo
18745248METHOD FOR CALIBRATION OF CAMERA AND LIDAR, AND COMPUTER PROGRAM RECORDED ON RECORDING MEDIUM FOR EXECUTING METHOD THEREFORJune 2024August 2025Allow1430YesNo
18743522SONAR SYSTEM WITH ADJUSTED BEAMJune 2024March 2025Allow910NoNo
18742104TRANSMITTING ULTRASONIC SIGNAL DATAJune 2024August 2025Allow1410YesNo
18741921TRANSMITTING ULTRASONIC SIGNAL DATAJune 2024October 2025Allow1610YesNo
18741936TRANSMITTING ULTRASONIC SIGNAL DATAJune 2024October 2025Allow1610YesNo
18740327RANGING DEVICEJune 2024February 2026Allow2000NoNo
18740309RANGING DEVICEJune 2024February 2026Allow2000NoNo
18740270Methods and Apparatus to Improve Detection of Audio SignaturesJune 2024February 2025Allow910NoNo
18732342LiDAR BASED MONITORING IN MATERIAL HANDLING ENVIRONMENTJune 2024August 2025Allow1400NoNo
18731840DYNAMIC POWER REDUCTION TECHNIQUE FOR ULTRASOUND SYSTEMSJune 2024January 2025Allow800NoNo
18679751METHOD AND SYSTEM FOR SIMULTANEOUS DETECTION OF SIGNED DOPPLER SHIFTS AND RANGE MEASUREMENTSMay 2024October 2024Allow510NoNo
18675797ADAPTIVE CODING FOR LIDAR SYSTEMSMay 2024August 2024Allow200NoNo
18674783METHOD FOR DETECTING STRUCTURAL ABNORMAL AREA OF COAL AND ROCK MASSMay 2024August 2024Allow300NoNo
18662246TECHNIQUES TO USE POWER SPECTRUM DENSITY IN COHERENT LIDAR SYSTEMSMay 2024February 2025Allow910NoNo
18657328OPTICAL DEVICE AND PHOTODETECTION SYSTEMMay 2024March 2025Allow1010NoNo
18656820POSITION DETERMINATION SYSTEM HAVING A DECONVOLUTION DECODERMay 2024June 2025Allow1310NoNo
18656438RADAR APPARATUSMay 2024March 2025Allow1010NoNo
18707658METHOD FOR DISPLAYING ALTERNATIVE NAVIGATION ROUTE, AND NAVIGATION DEVICEMay 2024February 2026Allow2110NoNo
18656280TECHNIQUES FOR FMCW LIDAR SYSTEM DESCAN COMPENSATIONMay 2024June 2025Allow1300NoNo
18654884NOVEL METHOD FOR ESTIMATING WATER SATURATION IN GAS RESERVOIRS USING ACOUSTIC LOG P-WAVE AND S-WAVE VELOCITESMay 2024October 2024Allow510NoNo
18652664SAME-PATH AND SYNCHRONOUS DETECTION SYSTEM AND METHOD FOR ATMOSPHERE DATAMay 2024July 2024Allow200NoNo
18649885IMAGING DEVICES WITH SELECTIVELY ALTERABLE CHARACTERISTICSApril 2024May 2025Allow1210NoNo
18644292ANCHOR MONITORApril 2024February 2025Allow1010NoNo
18643540METHOD FOR FREQUENCY IDENTIFICATIONApril 2024June 2024Allow200NoNo
18641933Computer System for Event Detection of Passive Seismic DataApril 2024August 2024Allow400NoNo
18641950Apparatus with Circuitry for Seismic Data DetectionApril 2024July 2024Allow300NoNo
18641972Apparatus and System for Identifying Seismic FeaturesApril 2024August 2024Allow400NoNo
18640556ENHANCED RESOLUTION SPLIT APERTURE USING BEAM SEGMENTATIONApril 2024December 2025Allow2000YesNo
18641011Autonomous Vehicle Including LIDAR Sensor System Having Improved Photonics InterfaceApril 2024September 2024Allow510NoNo
18640205SYSTEMS, METHODS, AND COMPUTER-READABLE MEDIA OF AUTOMATIC NETWORK SLICING OF UNDERWATER ACOUSTIC COMMUNICATION SYSTEM RESOURCESApril 2024April 2025Allow1210NoNo
18641019MULTI-MODE SURFACE-WAVE FREE-FIELD INVERSION METHOD BASED ON DISPERSION PROPERTIES OF LAYERED MEDIAApril 2024January 2026Allow2100NoNo
18639713SYSTEMS AND TAGGING INTERFACES FOR IDENTIFICATION OF SPACE OBJECTSApril 2024December 2025Allow2010YesNo
18639643ROTATING COMPACT LIGHT RANGING SYSTEMApril 2024January 2025Allow900NoNo
18636214LASER RANGING METHOD, DEVICE, AND LIDARApril 2024February 2025Allow1030NoNo
18635321AERIAL VEHICLE IMAGE CAPTURING SYSTEMSApril 2024July 2025Abandon1510NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 3645.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
273
Examiner Affirmed
165
(60.4%)
Examiner Reversed
108
(39.6%)
Reversal Percentile
79.1%
Higher than average

What This Means

With a 39.6% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
703
Allowed After Appeal Filing
258
(36.7%)
Not Allowed After Appeal Filing
445
(63.3%)
Filing Benefit Percentile
74.7%
Higher than average

Understanding Appeal Filing Strategy

Filing a Notice of Appeal can sometimes lead to allowance even before the appeal is fully briefed or decided by the PTAB. This occurs when the examiner or their supervisor reconsiders the rejection during the mandatory appeal conference (MPEP § 1207.01) after the appeal is filed.

In this dataset, 36.7% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is above the USPTO average, suggesting that filing an appeal can be an effective strategy for prompting reconsideration.

Strategic Recommendations

✓ Appeals to PTAB show good success rates. If you have a strong case on the merits, consider fully prosecuting the appeal to a Board decision.

✓ Filing a Notice of Appeal is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Art Unit 3645 - Prosecution Statistics Summary

Executive Summary

Art Unit 3645 is part of Group 3640 in Technology Center 3600. This art unit has examined 13,248 patent applications in our dataset, with an overall allowance rate of 82.9%. Applications typically reach final disposition in approximately 33 months.

Comparative Analysis

Art Unit 3645's allowance rate of 82.9% places it in the 74% percentile among all USPTO art units. This art unit has an above-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 3645 receive an average of 1.53 office actions before reaching final disposition (in the 23% percentile). The median prosecution time is 33 months (in the 38% percentile).

Strategic Considerations

When prosecuting applications in this art unit, consider the following:

  • The art unit's allowance rate suggests a more favorable examination environment compared to the USPTO average.
  • With fewer office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is longer than average and should be factored into your continuation and client communication strategies.
  • Review individual examiner statistics within this art unit to identify examiners with particularly favorable or challenging prosecution patterns.

Important Disclaimer

Not Legal Advice: The information provided in this report is for informational purposes only and does not constitute legal advice. You should consult with a qualified patent attorney or agent for advice specific to your situation.

No Guarantees: We do not provide any guarantees as to the accuracy, completeness, or timeliness of the statistics presented above. Patent prosecution statistics are derived from publicly available USPTO data and are subject to data quality limitations, processing errors, and changes in USPTO practices over time.

Limitation of Liability: Under no circumstances will IronCrow AI be liable for any outcome, decision, or action resulting from your reliance on the statistics, analysis, or recommendations presented in this report. Past prosecution patterns do not guarantee future results.

Use at Your Own Risk: While we strive to provide accurate and useful prosecution statistics, you should independently verify any information that is material to your prosecution strategy and use your professional judgment in all patent prosecution matters.